US scientists working on miniaturised, jet engine-based generators created from a single stack of bonded silicon wafers. These chip-based mini engine could power gadgets like mobile phone in the future.
Recently fuel cells for electronics where in the news, now tiny engines could be another solution to the battery problem.
The micro jet turbines work by spinning a tiny magnet above a mesh of interleaved coils etched into a wafer. David Arnold and Mark Allen of the Georgia Institute of Technology, are the first to to build a silicon-compatible device capable of converting mechanical energy, produced by a rotating microturbine, into usable amounts of electrical energy.
Microengines have at least 10 times more energy per volume of fuel than conventional lithium batteries. They take up less space and work apparently better fuel cells.
Much more details in Story on The New Scientist.
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